-81.1% is the change from 1000 to 189
Calculation steps:
[( 189 - 1000 ) ÷ 1000] x 100 = -81.1%
Formula
Percentage change = [(189 - 1000) / 1000] x 100
Subtract the new number by the original number
189 - 1000 = -811
-811 ÷ 1000 = -0.811
-0.811 x 100 = -81.1%